#include<iostream>
#include<conio.h>
using namespace std;

namespace first_space{
	void func1(){
		cout << "the first func in first space" << endl;
	}
	void func2(){
		cout << "the second func in first space" << endl;
	}
}
namespace second_space{
	void func1(){
		cout << "the first func in second space" << endl;
	}
	void func2(){
		cout << "the second func in second space" << endl;
	}
}
using namespace second_space;
int main(){
	func2();
	first_space::func1();
	_getch();
}